The official source reports this update: v2.39.0 (2026-09-03). What's Changed 🐛 Bug Fixes Fix the context_subtree() exporter cache and its span-processor leaks by @dsfaccini in #7667 Restore the Instrumentation spec option include_model_request_parameters and sharpen the undeclared-attribute merge error by @DouweM in #8046 Detect Azure content-filter errors for AzureProvider and for AsyncAzureOpenAI clients on OpenAIProvider by @quinnarnold in #7922 Emit speech finalized by a tool call on stream_transcripts() by @DouweM in #8062 Attribute tool-returned media to its originating tool call when it can't ride the tool result by @dsfaccini in #7830 Full Changelog : v2.38.0...v2.39.0
Canonical AI event
The context_subtree() exporter cache is fixed in v2.39.0.
The v2.39.0 release fixes context_subtree() exporter cache leaks. It also restores the Instrumentation spec option include_model_request_parameters.
4 Sept 20261 verified claims1 sources1 observations
This official update documents a development concerning v2.39.0 (2026-09-03). Its practical significance depends on the scope and evidence stated by the source.
Read the official source update and verify its stated scope, evidence and timing before acting on it.
Connected knowledge
Entities affected by this event
Evidence trail
Sources behind the event
Editorial presentation
Open story